Hi Robert, Sunanda,
Am Montag, 10. Juni 2002 11:11 schrieb [EMAIL PROTECTED]:
> Here's a copy of my email that doesn't seem to have arrived after three
> days. Apologies if you got it while me and the archive didn't.
>
> I'm backing up Robert in his recent comment that: "Adding minimal
> user-friendly syntax can help a lot"
> Sunanda
>
> <<===>>
>
> Volker:
> > instead of =url
> > iam thinking about
> > here you get all the nice stuff: http://rebol.com
> > what do you think?
>
> Part of the problem with all these "pick the url from the data stream"
> suggestions is that it is not trivial to do. All of the following _could_
> be URLs:
>
> http://www.rebol.com
> www.rebol.com
> ftp://rebol.com/a-script.r
> /a-folder/a-subfolder/a-document.txt
> /a-folder/a-doc.htm#a-fragment
> /x
>
> And, for any of them in a document, they may be meant to be quoted or meant
> to be a clickable link.
>
> Basically the only 100% accurate rule is: "it's a clickable URL if I mark
> it up as such".
>
> Robert's =url may not be perfect as it requires the URL to be on a line by
> itself, and it needs embedded spaces to be coded as %20, but it does the
> job.
>
===a little parser-part
url-line: func [line /local text-end text url-start url rest] [
either parse line [
some [to ": " text-end: skip] url-start: (
text: copy/part line text-end
either all [
not error? try [set [val rest] load/next url-start]
find reduce [url! file!] type? val
] [
url: val
] [
rest: head line
]
) :rest
] [
rejoin [""build-tag compose [a href (url)] text </a>]
] [
line
]
]
;--samples
foreach line reduce [
"some text pointing to: http://somewhere.dom garbage"
"no url at all"
"no real url: nowhere"
"nothing behind: "
"multiple colons: this and: that"
"multiple colons: this and: that and url: http://somewhere.dom";
"some text pointing to: http://somewhere.dom";
{some text pointing to: %"http://somewhere/ with space.dom"}
{a file-link demo: %index.html}
] [
print[">>" line newline "==" url-line line ]
]
;--no real urls inside
>> some text pointing to: http://somewhere.dom garbage
== some text pointing to: http://somewhere.dom garbage
>> no url at all
== no url at all
>> no real url: nowhere
== no real url: nowhere
>> nothing behind:
== nothing behind:
>> multiple colons: this and: that
== multiple colons: this and: that
;--with urls
>> multiple colons: this and: that and url: http://somewhere.dom
== <a href="http://somewhere.dom";>multiple colons: this and: that and url</a>
>> some text pointing to: http://somewhere.dom
== <a href="http://somewhere.dom";>some text pointing to</a>
>> some text pointing to: %"http://somewhere/ with space.dom"
== <a href="http://somewhere/ with space.dom">some text pointing to</a>
>> a file-link demo: %index.html
== <a href="index.html">a file-link demo</a>
> Sunanda.
grretings
Volker
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